How many watts does a led light have in one meter? I should know this time

Because of its colorful colors and various types, led light strips have gradually become important lamps for people's indoor and outdoor decoration and lighting. So what are the issues that people who want to buy led strips are most concerned about? The most common ones are actually the material, luminous color, service life, power, and price of the light strip. What I want to talk about today is the power of the light strip.

Netizens often inquire about how many watts a meter of LED strips have. For such a question, they cannot be answered clearly in one sentence. After all, there are several types of strips with different voltages, and the types of products are different. There will be a gap in the power of the light strips.

How many watts does a LED light have in one meter?

Different led strips are different, and need to be calculated according to their current and voltage to calculate the power.

Power is a measure of the transfer rate of energy. In a DC circuit, it is the product of voltage V and current A; in an AC system, it is much more complicated. Regardless of whether it is high-voltage or low-voltage led strips, they all convert AC to DC to work.

Therefore, the power calculation of the led strip can be used:

P=UI

Calculation method of led light strip power:

White light (single lamp bead example)

LED working voltage (U): 1.8V-3.6V (mainly determined by the chip, the working voltage is different for different colors)

Rated current (I): [a wick 10mA-20mA]

Power (P): P=UI means power: 3V*20mA=3V*0.02A=0.06W (1A=1000mA)

A lamp bead is 0.18 watts. Then, there are 60 beads|72 beads|90 beads in one meter, which is multiplied by the corresponding number of beads in one meter. For example, if you bought a 20-meter led strip with 60 beads, the power

P=0.18*60*20=216 watts

Since the chips of each manufacturer are different, the working voltage and working current of the LED lamp beads will be different. Therefore, the power of the same one-meter led strip on the market will be different.